periodical cicada

Pronunciation:			`peeree'âdikul si'keydu
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	Definition:		[n]  North American cicada; appears in great numbers at infrequent intervals because the nymphs take 13' to 17' years to mature
	Synonyms:		Magicicada septendecim, seventeen-year locust
	See Also:		cicada, cicala, genus Magicicada, Magicicada